Home » RDBMS Server » Server Utilities » Improve expdp performance (10.2.0.4, Sun Solaris)
Improve expdp performance [message #543418] Tue, 14 February 2012 11:57 Go to next message
lg123
Messages: 225
Registered: August 2008
Senior Member
I am using expdp to export some tables, which is taking long time to complete. I use the following parameters :

DUMPFILE, SCHEMAS, INCLUDE, DIRECTORY, PARALLEL, LOGFILE, STATUS

Can someone suggest any method so that the expdp can complete faster?
Re: Improve expdp performance [message #543419 is a reply to message #543418] Tue, 14 February 2012 11:59 Go to previous messageGo to next message
BlackSwan
Messages: 22843
Registered: January 2009
Senior Member
It would be helpful if you followed Posting Guidelines - http://www.orafaq.com/forum/t/88153/0/

export smaller or fewer tables

You can't push a string.

[Updated on: Tue, 14 February 2012 11:59]

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Re: Improve expdp performance [message #543426 is a reply to message #543419] Tue, 14 February 2012 12:20 Go to previous messageGo to next message
Flyby
Messages: 144
Registered: March 2011
Location: Belgium
Senior Member
If oracle 11 and Enterprise Edition and advanced compression, compression might help

[Updated on: Tue, 14 February 2012 12:25]

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Re: Improve expdp performance [message #543430 is a reply to message #543418] Tue, 14 February 2012 12:40 Go to previous messageGo to next message
Michel Cadot
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Registered: March 2007
Location: Nanterre, France, http://...
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Buy faster disks and more powerfull cpus.
Remove all users.

Regards
Michel
Re: Improve expdp performance [message #543580 is a reply to message #543430] Wed, 15 February 2012 07:37 Go to previous messageGo to next message
lg123
Messages: 225
Registered: August 2008
Senior Member
Before it took almost 10 hours to export using datapump of around 500 GB and 2 months later, it took 24 hours to take export of 690 GB.

I checked the number of cpu's by looking at the cpu_count and the value is 12. The parallel option is set to 9. Please suggest any method so that it takes considerably less time to complete?
Re: Improve expdp performance [message #543582 is a reply to message #543580] Wed, 15 February 2012 07:48 Go to previous messageGo to next message
Michel Cadot
Messages: 59291
Registered: March 2007
Location: Nanterre, France, http://...
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Did you investigate where time is spent?
Have you recorded cpu and io consumption?
If you don't where time is spent and which resource is blocking you cannot improve the performances (and this is true for all performances problem).

Regards
Michel
Re: Improve expdp performance [message #543741 is a reply to message #543580] Thu, 16 February 2012 11:05 Go to previous message
Mahesh Rajendran
Messages: 10628
Registered: March 2002
Location: oracleDocoVille
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Why are you exporting 690Gb worth data? What is the need?

[Updated on: Thu, 16 February 2012 11:05]

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